jsreport has now official Docker image. You can find it here. If you are not familiar with Docker I encourage you to check it out. It is great platform for delivering and installing distributed applications.
Docker makes running jsreport so simple that you can basically just type
sudo docker run -p 443:2945 jsreport/jsreport
and you have jsreport server magically running in a minute. Whole server will run inside a container you can easily stop or delete anytime without affecting the rest of your system. This makes prototyping with jsreport super easy. Doesn't it?